{"version":"1.0","type":"rich","title":"所有堆叠图","description":"This stacked bar chart visualizes two lane categories, comparing counts of pedestrians, non-motorized vehicles, and motor vehicles. Built with D3 v6 and React, it uses `d3.stack()` to compute stacked series, `d3.scaleBand` with padding for the x-axis, and a linear scale for y-values. An HTML legend maps colors via `d3.schemeSet3`, while SVG rectangles render each segment, and axes are added through `d3.axisLeft` and `d3.axisBottom`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/238b64679bcc42f18a6b44767f0fa298?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}